Repair device



Dec. 9, 1947. N. sTEvENs REPAIR DEVICE Filed Feb. 13, 1945 Patented Dec. 9, 1947 UN I TED STAT ES PATENT OF FICE 2;43,457

REPAIR DEVC Nichols Stevens, Chicago, Ill.. Aiplcatl lFebllaly 13, 1945;. Sleral N01.' 577,711: 6' claims. (cl. 15a-36er This invention relatesfto" a repair device' for repairing innertubes and other rubber articles; andits principal object is-'the provision of asimpleand efcient repair device which can befreadA ily applied to the article to seal aipuncture` or utdthereinv against the.. escape of' air or other Another object is` the provision of-an inner tube repair devicef which may be quickly applied Vtoa tubewithout thefuseof tools other thanl a screw driver.

`Another object is theprovision of a tube repair device which is positive in action, andl effectively prevents leakage of` air throught-a` puncture or cut.

Other objects and'advant'ag-es will appear in the course of this-'specification and with said objects andadvantages in view this invention consists in the several novel featureshereinafter fully described and more particularly dened in the ap- 1 pended i claims.`

The invention is clearly illustrated'in the drawing accompanying this specication, in which:

Fig. l is a side elevation of a fragment of the inner tube of a tire, with one ofthe repair devices embodying one form ofthe present invention, applied thereto;

VFig`.3 isa side elevation of arragrnent oif` an inner tube with a modified form of the invention applied thereto;

Fig. 4 is a section taken on the line 4-4 of Fig. 3;

Fig. is a face View of the innerdisc shown in Figs. 3 and 4;

Fig. 6 is a side elevation of a fragment of an inner tubeiwith a second modified form of the invention applied thereto; and

Fig. '7 is a section taken on the line 'I-l of Fig. 6.

Referring to said drawing, and first to Figs. l and 2, the reference character Ill designates a fragment of an inner tire tube, which has a cut or puncture II, therein.

I2 designates an inner metal disc, which has been inserted into the interior of the tube through the puncture. On the outside of the tube is placed a washer I3 of rubber or other pliable composition, and upon the washer is placed a com panion metal disc I4. The two discs and washer have registering screw holes i5 therein.

The inner disc is extruded around the screw holes as at I6 and is internally screw threaded., Along the screw holes, both discs are struck up to form annular shallow depressions I'I, Ii curved 2N in cross section, which serve to bendtlieitube along ltli'e screw holes into alclia'nnell or"trough like forni. i

Screws I 9"are employed to clamp the members oftherrepair'device rmly-fupon the tube- These screws extend through the outer disc' Id;l th'e washer I3,` theftube' Itand inner disc I2l, arid'are threaded in tlie inner disc;l Under th'eheadlof each screw is a thin-metalwasher 2li,v and? bei tween each-metal washer and the outer` diie is" a rubber washer 2| which is compressed into' the dpres'sionin the disc, thereby preventingdeakage of air around the screw.

The'deviceis applied to an inner tireftubefby rstfinserting the yinner discthrough the cut` in thetube,` holding itI iniplace, .puncturing `the `tube atplacesf registering witlith'e screw holes in the inner disc, placing the rubber washer on the` tube witlithe screw holes-inregistry with thosefof the innerldisc', placing the outer" disc upon the washer; with the screw holes in registry with'the others, andwinserting the screws through Vthe screw holes, wtnlthefsmall rubber and rnetalwashers Vcnthe screws'and screwingthe screws up tight, thereby r'rn'ly clamping the Vinner tubebetweenthe inner Cli'scand pliable washer. l

Round headed screws are preferable because they do not injurethe tire'casingi-with which they contact; The metal discsare constructed oiex-- ible` thin metal,` `preferably brass;l so` thats they may flex as the tire travels over the road.

The form of the invention illustrated in Figs. 1 and 2 is intended for use on relatively large cuts or punctures. The modied form illustrated in Figs. 3, 4 and 5 is intended for use in repairing relatively small punctures. In this form the inner disc 22 may have an elongated, blunt pointed end 23 which serves as a handle whereby to hold said inner disc in place while assembling the parts. As in the preferred form there is an inner disc 22, an cuter disc 24, a rubber washer 25 between the tube and outer disc, a single screw 25 and rubber and metal washers 21, 28. A single screw hole is formed in the discs and washer 25, and the inner disc is extruded around the screw hole to provide for the internal threads in the inner disc. Both discs are dished inwardly on spherical lines. This form of the device is applied to the tube in the same manner as has been .explained in connection with the preferred form.

The modified form shown in Figs, 6 and '7 is intended for use on tubes having a relatively long cut 29 therein. In this form elongated inner and outer metal strips 3S, 3i are employed which are toi a length to completely cover the cut. Between the tube and outer metal strip is an elongated rubber washer 32. The inner and outer metal strips and washer are formed with several screw holes, along which the metal of the disc is struck up to form channel or trough like depression 33 and the inner metal strip is extruded around the screw holes to provide for the internal threads on the inner strip. Screws 34, with rubber and metal washers are used to clamp the device upon the tube as in the other forms.

While the discs are described as formed of metal it is obvious that they may be formed of plastic or other hard material.

It will be seen that in the several forms shown, the metal of the inner and outer discs` and strips adjacent the depressions is reversely curved with respect to the depressed portions. This avoids any sharp bends being formed in the tube which might cause breakage or tearing of the` tube. 1

What I claim as new and desire to secure by Letters Patent is: A

1. A repair device comprising inner and outer exible plates, both formed with at least one screw hole, the inner plate being threaded around the screw hole therein andthe material of said on adapted to clamp the plate and pliable washer upon a tube.

4. An inner tube repair device comprising inner and outer iiexible metal discs, both formed with registering screw holes, the inner disc being threaded around the screw holes therein, and the metal of said discs along the screw holes being depressed inwardly, a pliable washer adapted to be placed between an inner tube and the outer disc, and screws, with rubber and metal washers thereon adapted to clamp the discs and pliable washer upon a tube.

"5. An inner tuberepair device comprising inner and outer flexible metal elongated metal strips, both formed with registering screw holes, the inner elongated metal strip being threaded around vthe screw holes therein, and the metal of inwardly, a pliable washer adapted to be placed therein, and the material ofr said elongated strips along the screw holes being depressed inwardly, a pliable washer adaptedto be placed between an inner tube and the outer elongatedrm'etal strip, and screws, with rubber and metal washers therekclamp the strips and pliable washer upon a tube.

6. An inner tube repair device comprising inner and outer flexible discs, each formed with a screw hole, the metal of the inner disc being extended around the screwhole and .being internally screw threaded, and the Ymaterial of'both discs being dished inwardly, a pliable 4'washer adapted to be placed on an inner tube and the outer disc, a screw with a rubber washer and a metal washer thereon, between the head of the screw and outer discs, said screw being adapted to clamp the discs and pli-able washer upon the tube.

NICHOLS STEVENsy REFERENCES CITED The following references are of Arecord in the le of this patent:

UNITED STATES. PATENTS Number 

